Compound for igniting blast-fuses.



tinrrnn s'ra rns rA'r-nn'r nut ient JAMES M. CORDRAY, OF LOS ANGELES, CALIFORNIA.

COMPOUND FOR IGNITING BLAST-FEFSES.

No Drawing".

To all whom it may concern Bevit known that I, JA ES M. 001mm, citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain' new andnseful Improvements in Com-' .pounds for Igniting Blast-Fuses, of which the following is a specificatio This invention has as its ob ect to provide a compound to be applied to blast fuses to insure their ignition.

In blast-in it is customar to the several charges at a time and it not infrequently happens that one or several charges will fail to be ignited due to the fuse becoming extinguished. When this occurs, a miner is liable to drill into the unexploded blast with disastrous results. Thefailure of the fuse to burn is usually due to the fact that its end which is ignited, rests upon a damp spotor the flame is not held to it for a sufficient length of time to insure of its becom- 'ing properly ignited.

The present invention therefore aims to provide a compound which is to be applied to the end of such a fuse immediately prior to igniting the same, which compound will cause proper ignition of the fuse even though it be damp or has previously been dipped in water. y 5

The compound of the present invention is composed of the following ingredients in substantially the quantities stated:

' Powdered gum camphor la -ozs.-

Oil-of Sassafras e or. Potassium nit-rate 1 oz.

Oil of eucalyptus 4- ozs. Kerosene 12 ozs.

' of the exterior surface of the said receptacle.

The ingredients Within the receptacle are Specificatio n' of Letters Patent.

Patented Sept. a rare.

App1ication filed January 24, 1912. Serial No. 673,251.

first heated to a temperature of 150 F. and.

are stirredfor about a minute. The contents of the receptacle are then. emptied into another receptacle and cooled to 100 F;- To the mixture thus cooled there are 'added twelve ounces of kerosene and after the mixture has been thoroughly stirred it. is poured into suitable cans and the cans are sealed until the mixture '18 to be used in th mine.- 7

In using the compound, that end of the fuse which is to be ignited, is dipped intd the compound and is splitfor a distance,

preferably for about one-half inch, of its length. The end of the fuse is then ignited and the colnpourd with which it has been 66.

saturated will burn for a suflicient length of time to insure of proper ignition of the re mainder of the fuse. a

I employ gum camphor in my fuse ignit ing compound for the reason that thissubstance willburn'with a steady flame without emitting sparks and will take lire readily even though it has been dipped in water. The oil of sassafras and oil of eucalyptus are employed for. the purpose of retaining '75 the strength of the camphor and preventing its evaporation and also for the reason that the oil of eucalyptus ishighly inflammable. Thecoal oil is used to render the compound of proper consistency for use and also for 89.

the reason that it is inflammable.

Having thus described the invention what is claimed as new is}- 1. A fuse igniting compound including potassium nitrate, gum camphor, and'kerosene.

2. A fuse igniting compound consisting of gum camphor, otassium nltrate, oil of sassafras, oil of et calyptus, and kerosene.

v 3. A fuse igniting compound includinga mixture of potassium nitrate, gum camphor,

and a liquid hydrocarbon.

In testimony-whereof I aiiix my signature in presence of two witnesses.

JAMES "M. CORDRAY. [1,. s] a Witnesses: ALvIN GALLAHER,

MARY A. OORnRAY. 

